<script setup>
	import { computed, ref } from 'vue';
	import { onLoad } from '@dcloudio/uni-app'
	import { getBannerAPI, getCategoryTopAPI } from '@/utils/apis.js'
	// 骨架屏
	import Skeleton from './components/skeleton.vue'

	let bannerList = ref([])
	// banner
	let getBannerData = async() => {
		let res = await getBannerAPI(2)
		bannerList.value = res.result
	}
	
	// 获取分类列表数据
	const categoryList = ref([])
	const activeIndex = ref(0)
	const getCategoryTopData = async () => {
		const res = await getCategoryTopAPI()
		categoryList.value = res.result
	}

	// 是否数据加载完毕  显示骨架屏
	const isFinish = ref(false)
	onLoad(async () => {
		await Promise.all([getBannerData(), getCategoryTopData()])
		// 等待await Promise.all里面的执行完，才会执行下面的
		isFinish.value = true
	})
	
	
	// 获取当前二级分类数据
	let subCategoryList = computed(() => {
		// 加问号防止undefined，如果真为空，给个[]
		return categoryList.value[activeIndex.value]?.children || []
	})
	
	
</script>

<template>
	<view class="viewport" v-if="isFinish">
		<!-- 搜索框 -->
		<view class="search">
			<view class="input">
				<text class="icon-search">女靴</text>
			</view>
		</view>
		<!-- 分类 -->
		<view class="categories">
			<!-- 左侧：一级分类 -->
			<scroll-view class="primary" scroll-y>
				<view v-for="(item, index) in categoryList" :key="item.id" class="item" :class="{ active: index === activeIndex }"  @click="activeIndex = index">
					<text class="name">{{item.name}}</text>
				</view>
			</scroll-view>
			<!-- 右侧：二级分类 -->
			<scroll-view class="secondary" scroll-y>
				<!-- 焦点图 -->
				<XtxSwiper class="banner" :list="bannerList" />
				<!-- 内容区域 -->
				<view class="panel" v-for="item in subCategoryList" :key="item.id">
					<view class="title">
						<text class="name">{{ item.name }}</text>
						<navigator class="more" hover-class="none">全部</navigator>
					</view>
					<view class="section">
						<navigator v-for="goods in item.goods" :key="goods" class="goods" hover-class="none"
							:url="`/pages/goods/goods?id=${goods.id}`">
							<image class="image"
								:src="goods.picture"></image>
							<view class="name ellipsis">{{ goods.name }}</view>
							<view class="price">
								<text class="symbol">¥</text>
								<text class="number">{{ goods.price }}</text>
							</view>
						</navigator>
					</view>
				</view>
			</scroll-view>
		</view>
	</view>
	<!-- 骨架屏 -->
	<Skeleton v-else />
</template>

<style lang="scss">
	page {
		height: 100%;
		overflow: hidden;
	}

	.viewport {
		height: 100%;
		display: flex;
		flex-direction: column;
	}

	.search {
		padding: 0 30rpx 20rpx;
		background-color: #fff;

		.input {
			display: flex;
			align-items: center;
			justify-content: space-between;
			height: 64rpx;
			padding-left: 26rpx;
			color: #8b8b8b;
			font-size: 28rpx;
			border-radius: 32rpx;
			background-color: #f3f4f4;
		}
	}

	.icon-search {
		&::before {
			margin-right: 10rpx;
		}
	}

	/* 分类 */
	.categories {
		flex: 1;
		min-height: 400rpx;
		display: flex;
	}

	/* 一级分类 */
	.primary {
		overflow: hidden;
		width: 180rpx;
		flex: none;
		background-color: #f6f6f6;

		.item {
			display: flex;
			justify-content: center;
			align-items: center;
			height: 96rpx;
			font-size: 26rpx;
			color: #595c63;
			position: relative;

			&::after {
				content: '';
				position: absolute;
				left: 42rpx;
				bottom: 0;
				width: 96rpx;
				border-top: 1rpx solid #e3e4e7;
			}
		}

		.active {
			background-color: #fff;

			&::before {
				content: '';
				position: absolute;
				left: 0;
				top: 0;
				width: 8rpx;
				height: 100%;
				background-color: #27ba9b;
			}
		}
	}

	.primary .item:last-child::after,
	.primary .active::after {
		display: none;
	}

	/* 二级分类 */
	.secondary {
		background-color: #fff;

		.carousel {
			height: 200rpx;
			margin: 0 30rpx 20rpx;
			border-radius: 4rpx;
			overflow: hidden;
		}

		.panel {
			margin: 0 30rpx 0rpx;
		}

		.title {
			height: 60rpx;
			line-height: 60rpx;
			color: #333;
			font-size: 28rpx;
			border-bottom: 1rpx solid #f7f7f8;

			.more {
				float: right;
				padding-left: 20rpx;
				font-size: 24rpx;
				color: #999;
			}
		}

		.more {
			&::after {
				font-family: 'erabbit' !important;
				content: '\e6c2';
			}
		}

		.section {
			width: 100%;
			display: flex;
			flex-wrap: wrap;
			padding: 20rpx 0;

			.goods {
				width: 150rpx;
				margin: 0rpx 30rpx 20rpx 0;

				&:nth-child(3n) {
					margin-right: 0;
				}

				image {
					width: 150rpx;
					height: 150rpx;
				}

				.name {
					padding: 5rpx;
					font-size: 22rpx;
					color: #333;
				}

				.price {
					padding: 5rpx;
					font-size: 18rpx;
					color: #cf4444;
				}

				.number {
					font-size: 24rpx;
					margin-left: 2rpx;
				}
			}
		}
	}
</style>